Classification of Elements and Periodicity in Properties Test

Result

Classification of Elements and Periodicity in Properties Test - 3

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Atomic number of element Unnilhexium is:

A
106

B
105

C
110

D
107

Solution

un=1 Nil=0 Hex=6 So 106=uninilhexium.
Question 2
1 / -0

According to IUPAC nomenclature,element Ununnillium have an atomic number of:

A
109

B
110

C
111

D
108

Solution

un=1 nil=0 So 110 = ununnilium.
Question 3
1 / -0

Electronic configuration of an element is:

A
The distribution of electrons into spin state of an atom

B
The distribution of electrons into azimuthal orbitals of an atom only

C
The distribution of electrons into different atomic orbitals.

D
The distribution of electrons into magnetic states of an atom

Solution

The electronic configuration of an atom, describes the arrangement of electrons in space around the nucleus. The electrons are distributed over different energy level. These energy levels are called the shell or orbits.
Question 4
1 / -0

The third period (n = 3) begins at sodium with addition of first electron to

A
2s orbital

B
2p orbital

C
3p orbital

D
3s orbital

Solution

The electronic configuration of sodium is 1s² 2s² 2p⁶ 3s¹. The valence electron is in 3s orbital.
Question 5
1 / -0

Before the 4p orbital is filled, filling up of 3d orbitals becomes energetically favourable and there are 3d transition series of elements. This starts from scandium (Z = 21) which has the outermost electronic configuration of.

A
3d¹4s²

B
3d¹4p²

C
3s¹4d²

D
2d¹3s²

Solution

The electronic configuration of scandium is [Ar] 3d¹ 4s².
Question 6
1 / -0

Maximum number of electrons occupied by s,p and d orbitlas are:

A
2, 10, 10

B
2, 6 and 10

C
2, 2, 8

D
2, 8, 8

Solution

s-orbital ml=0, so it can accommodate 2 electron.

p-orbital has ml = -1,0,+1. It can accommodate 6 electrons.

d-orbital has ml = -2,-1,0,1,2.It can accommodate 10 electrons.
Question 7
1 / -0

s-block elements comprise of

A
Group 4 (alkali metals) and Group 7 (alkaline earth metals)

B
Group 1 (alkali metals) and Group 2 (alkaline earth metals).

C
Group 1 and Group 4

D
Group 3 and Group 2

Solution

s-block contains two group of elements including alkali earth metal and alkaline earth metal.
Question 8
1 / -0

All the orbitals in the valence shell of the noble gases

A
completely filled by electrons and it is very easy to remove electrons

B
not completely filled by electrons and the arrangement is not stable

C
not completely filled by electrons and it is very easy to alter this stable arrangement by the addition or removal of electrons

D
are completely filled by electrons.

Solution

These elements are called noble elements beacuse they contain ns², np⁶ valence shell electronic configuration. A complete octet in the outermost shell makes these elements chemically stable, and therefore they do not easily react with other elements to form compounds.
Question 9
1 / -0

d-Block Elements are characterized by the

A
filling of outer d orbitals

B
filling of inner d orbitals by electrons

C
absence of d orbital electrons

D
inner d orbitals are not filled

Solution

d-Block elements also known as transition elements are characterized by the filling of inner d orbitals by electrons before the valence-shell s orbital.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Classification of Elements and Periodicity in Properties Test - 3

Result

Classification of Elements and Periodicity in Properties Test - 3

Score

-

Rank

-

SHARING IS CARING

Question 1

106

105

110

107

Solution

Question 2

109

110

111

108

Solution

Question 3

The distribution of electrons into spin state of an atom

The distribution of electrons into azimuthal orbitals of an atom only

The distribution of electrons into different atomic orbitals.

The distribution of electrons into magnetic states of an atom

Solution

Question 4

2s orbital

2p orbital

3p orbital

3s orbital

Solution

Question 5

3d14s2

3d14p2

3s14d2

2d13s2

Solution

Question 6

2, 10, 10

2, 6 and 10

2, 2, 8

2, 8, 8

Solution

Question 7

Group 4 (alkali metals) and Group 7 (alkaline earth metals)

Group 1 (alkali metals) and Group 2 (alkaline earth metals).

Group 1 and Group 4

Group 3 and Group 2

Solution

Question 8

completely filled by electrons and it is very easy to remove electrons

not completely filled by electrons and the arrangement is not stable

not completely filled by electrons and it is very easy to alter this stable arrangement by the addition or removal of electrons

are completely filled by electrons.

Solution

Question 9

filling of outer d orbitals

filling of inner d orbitals by electrons

absence of d orbital electrons

inner d orbitals are not filled

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.

3d¹4s²

3d¹4p²

3s¹4d²

2d¹3s²